Patio umbrella base



FIG. 1 is a front elevation view of a patio umbrella base, showing mynew design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines depict portions of the patio umbrella base that form nopart of the claimed design.

CLAIM The ornamental design for a patio umbrella base, as shown anddescribed.